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Search: id:A134025
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| A134025 |
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Numbers having in balanced ternary representation the same length as in ternary representation. |
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+0
4
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| 0, 1, 3, 4, 9, 10, 11, 12, 13, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121
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OFFSET
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0,3
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COMMENT
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A134021(a(n)) = A081604(a(n));
complement of A134026.
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FORMULA
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a(n) = f(n,0,0) with f(n,m,k) = if n=0 then k else if k<(3^(m+1)-1)/2 then f(n-1,m,k+1) else f(n-1,m+1,3^(m+1)).
a(n) = f(n,0,0) with f(n,m,k) = if n=0 then k else if k<(3^(m+1)-1)/2 then f(n-1,m,k+1) else f(n-1,m+1,3^(m+1)).
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CROSSREFS
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Adjacent sequences: A134022 A134023 A134024 this_sequence A134026 A134027 A134028
Sequence in context: A082188 A095047 A079258 this_sequence A109406 A010376 A010388
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KEYWORD
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nonn
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 19 2007
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